

A190201


a(n) = [n*u+n*v][n*u][n*v], where u=sqrt(5), v=1/u, and []=floor.


3



0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1


LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000


MATHEMATICA

u = 5^(1/2); v = 1/u;
f[n_] := Floor[n*u + n*v]  Floor[n*u]  Floor[n*v]
t = Table[f[n], {n, 1, 120}] (*A190201*)
Flatten[Position[t, 0]] (*A190202*)
Flatten[Position[t, 1]] (*A190203*)


PROG

(PARI) for(n=1, 30, print1(floor(n*(sqrt(5) + 1/sqrt(5)))  floor(n*sqrt(5))  floor(n/sqrt(5)), ", ")) \\ G. C. Greubel, Dec 27 2017
(MAGMA) [Floor(n*(Sqrt(5) + 1/Sqrt(5)))  Floor(n*Sqrt(5))  Floor(n/Sqrt(5)): n in [1..30]]; // G. C. Greubel, Dec 27 2017


CROSSREFS

Cf. A190202, A190203.
Sequence in context: A095076 A285080 A167392 * A189702 A168395 A278718
Adjacent sequences: A190198 A190199 A190200 * A190202 A190203 A190204


KEYWORD

nonn


AUTHOR

Clark Kimberling, May 05 2011


STATUS

approved



